Type Indoor, Wall hung, Fully Condensing

Fuel Preset for NG / LP convertible

Minimum / Maximum Input (Btu/h) 30,000 / 199,950

Combustion efficiency 98%

Thermal Efficiency 94%

Energy factor 0.93

Dimensions H X W X D (inches) 25.9 X 17.5 X 14.2 (3.7 cu. ft)

Weight (lbs) 90

Water Inlet / Outlet Connection 3/4" NPT

Gas Inlet Connection 3/4" NPT

Minmum Flow Rate .6 GPM

Ignition Electronic Spark Ignition

Venting TypeDirect Vent (2 pipe - intake &

exhaust), Power vent (1 pipe -

exhaust only)

Venting MaterialsSch. 40 PVC, Sch. 40 CPVC,

Polypropylene, Stainless Steel

Max 3” Vent Length - Single Pipe / Power Vent 200 ft, deduct 5 ft per 90° elbow

Max 3” Vent Length - Two pipe / Direct Vent 100 ft, deduct 5 ft per 90° elbow

Max 2” Vent Length - Single Pipe / Power Vent

(2” not allowed at elevations above 4,000 ft)26 ft, deduct 5 ft per 90° elbow

Max 2” Vent Length - Two Pipe / Direct Vent

(2” not allowed at elevations above 4,000 ft)21 ft, deduct 5 ft per 90° elbow

Common Venting Yes

Safety

Flame Rod, Thermal Fuse, Overheat

Prevention Device, Fan Speed

Monitor, Flue Temperature Monitor,

Blocked Vent Detector, Water Leak

Detector, Water Shut Off Valve,

2X10A Fuse, Dual Flame Sensing

Water Pressure Min / Max (PSI) 30 / 150

NG/LP- Minimum Static Gas Pressure 1/2" 5" (non-corrugated, black iron)

NG/LP- Minimum Static Gas Pressure 3/4" 2.5" (non-corrugated, black iron)

NG/LP - Maximum Static Gas Pressure 14”

Gas Pressure for Adjustments 8" for NG, 11" for LP

Electrical 120V AC, 60 Hz

Power Consumption500W (Max 4.2 Amps), 8W

(Standby)

Cascading Masterless, 10 units

Heat exchanger Expandable, Stainless 316L

Warranty (with recirculation) Heat Exchanger: 6 years, Parts: 5

years, Labor: 1 year

Parameters FlexFlame94

Hot water out

T & P Relief ValveStorage Tank

Aquastat

Cold water in

Circulator

Isolation and Drain Kit Recommended

Instantaneous Hot Water Production Rate Per HeaterGas Data

Input GPM @ GPM @ GPM @

Size BTU's/hr 60° Rise 80° Rise 100° Rise

FlexFlame94 199,950 6.3 4.7 3.8

Hourly Recovery Rate for Systems Circulating with a Storage TankGas Data Storage Sized for

Input Tank GPH @ GPH @ GPH @ # of Washers

Size BTU's/hr Gallons 60° Rise 80° Rise 100° Rise Approx*

FlexFlame94-1 199,950 X 1 80 378 282 228 14FlexFlame94-2 199,950 X 2 119 756 564 456 28FlexFlame94-3 199,950 X 3 119 1134 846 684 42FlexFlame94-4 199,950 X 4 200 1512 1128 912 56* All systems should be sized by NATCO based on detailed job information. Call 1-888-OK-NATCO.

Gallons Per Minute at Temperature Rise

Gallons per Hour at Temperature Rise

Note: Systems with 2 heaters have 2 times the instantaneous hot water production rate, etc.